Motor with improved temperature characteristics

Details Motor with improved temperature characteristics Motor with improved temperature characteristics

1981-03-10

1983-08-30

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310190, H02K 2112

Patent

active

044019068

ABSTRACT:
The temperature characteristics of a motor which has a ferrite permanent magnet has been improved. The present motor comprises a stator assembly having at least a yoke for providing a magnetic path and a coil wound on said yoke, and a rotor assembly rotatably inserted in said stator assembly, having at least an elongated spindle rotatably supported by said yoke, and a cylindrical permanent magnet made of a ferrite material pierced by said spindle and being symmetrical wth respect to said spindle, said spindle being made of adjusting alloy or adjusting steel having the magnetic characteristics that the magnetic reluctance of the same increases as the temperature of the same increases, and said yoke is made of steel having the magnetic characteristics that the magnetic reluctance is constant irrespective of the change of the temperature. Although the temperature change causes the change of the flux from the ferrite permanent magnet, that change is compensated by the adjusting material of the spindle, and the effective flux which links with the coil of the stator assembly can be constant irrespective of the change of the temperature.

REFERENCES:
patent: 2146588 (1939-02-01), Merrill
patent: 2193675 (1940-03-01), Merrill
patent: 2245268 (1941-06-01), Goss et al.

Affiliated with

Also associated with

Rating

Motor with improved temperature characteristics does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Motor with improved temperature characteristics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor with improved temperature characteristics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-907705